Overview of Freeway Traffic Theories and Models: Fundamental Diagram Approach

2004 ◽  
pp. 63-86
Author(s):  
Boris S. Kerner
Keyword(s):  
Fundamental Diagram ◽  
Freeway Traffic ◽  
Diagram Approach

scholarly journals Automatic calibration of fundamental diagram for first-order macroscopic freeway traffic models

2015 ◽  
Vol 50 (3) ◽  
pp. 363-385 ◽  
Author(s):  
Renxin Zhong ◽  
Changjia Chen ◽  
Andy H. F. Chow ◽  
Tianlu Pan ◽  
Fangfang Yuan ◽  
...  
Keyword(s):  
Automatic Calibration ◽  
Fundamental Diagram ◽  
Freeway Traffic ◽  
Traffic Models ◽  
First Order

scholarly journals Determination of Observation Weight to Calibrate Freeway Traffic Fundamental Diagram Using Weighted Least Square Method (WLSM)

2017 ◽  
Vol 29 (2) ◽  
pp. 203-212
Author(s):  
Chunbo Zhang ◽  
Xiucheng Guo ◽  
Zhenping Xi
Keyword(s):  
Least Square Method ◽  
Specific Weight ◽  
Interesting Case ◽  
Least Square ◽  
Observation Data ◽  
Fundamental Diagram ◽  
Freeway Traffic ◽  
Weighted Least Square ◽  
Density Relationship ◽  
The One

Due to unbalanced speed-density observations, the one-regime traffic fundamental diagram and speed-density relationship models using least square method (LSM) cannot reflect actual conditions under congested/jam traffic. In that case, it is inevitable to adopt the weighted least square method (WLSM). This paper used freeway Georgia State Route 400 observation data and proposed 5 weight determination methods except the LSM to analyse 5 wellknown one-regime speed-density models to determine the best calibrating models. The results indicated that different one-regime speed-density models have different best calibrating models, for Greenberg, it was possible to find a specific weight using LSM, which is similar for Underwood and Northwestern Models, but different for that one known as 3PL model. An interesting case is the Newell's Model which fits well with two distinct calibration weights. This paper can make contribution to calibrating a more precise traffic fundamental diagram.

Cellular automaton model within the fundamental-diagram approach reproducing some findings of the three-phase theory

2012 ◽  
Vol 391 (11) ◽  
pp. 3129-3139 ◽  
Author(s):  
Jun-fang Tian ◽  
Zhen-zhou Yuan ◽  
Martin Treiber ◽  
Bin Jia ◽  
Wen-yi Zhang
Keyword(s):  
Cellular Automaton ◽  
Cellular Automaton Model ◽  
Fundamental Diagram ◽  
Phase Theory ◽  
Three Phase ◽  
Diagram Approach

Cellular automaton model in the fundamental diagram approach reproducing the synchronized outflow of wide moving jams

2012 ◽  
Vol 376 (44) ◽  
pp. 2781-2787 ◽  
Author(s):  
Jun-fang Tian ◽  
Zhen-zhou Yuan ◽  
Bin Jia ◽  
Hong-qiang Fan ◽  
Tao Wang
Keyword(s):  
Cellular Automaton ◽  
Cellular Automaton Model ◽  
Fundamental Diagram ◽  
Diagram Approach
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